在学习之前计划各项活动、预计结果、选择策略、想出各种解决问题的方法,这是学习的什么规律？ Before the event activities, expect results, select strategy, and come up with all kinds of methods to solve the problem, and evaluate its effectiveness belongs to __ strategy.
A.练习律 principle of exercise
B.准备律 principle of readiness
C.效果律 principle of effect
正确答案是B